PPT-EYE AND RETINA   What is light? Where does it fit into the spectrum of electromagnetic

Why is short wavelength electromagnetic radiation dangerous to us whereas long wavelength electromagnetic radiation is considered safe Which wavelengths do we see as Light Why these wavelengths Why couldnt the shorter and longer wavelength stuff work just . 1. Dr. Nikhat Siddiqi. THE NATURE OF LIGHT. Light is composed of electric and magnetic fields, which . are mutually . perpendicular and which . radiate out from a source. in all directions (Figure . ). . The stars and other objects in space are very far from Earth. Only a few solar system objects are close enough to be explored with probes. . Astronomers rely on electromagnetic waves to gain information about the universe.. (EMR). Remote Sensing Uses EMR!. Today’s learning objectives:. What is light and how do we describe it?. What . physical . units . do . we use to describe light?. Be able to convert between them and use scientific notation!. Almost all of our information on the heavens is derived from the light we see. We have returned samples from the Moon and a comet . Also obtained meteor samples. We have landed (with unmanned probes) on only a handful of planets and moons. Agenda. Turn in Displacement Lab work. Turn in Permission slips. Notes on . Studying Space & . Exploring . Space packet. Studying space from Earth. Tele. = distance. Scopos. = to watch. Light and radiation (energy in the form of waves that travel through empty space). Electromagnetic Radiation. Electromagnetic waves perpendicular waves combing the electric and magnetic fields. . Electromagnetic waves are produced when an electric charge vibrates or accelerates and can travel through empty space or through matter. . Energy that travels as a wave through space. Wavelength –. λ – distance between corresponding points on adjacent waves. Frequency – f – waves per second. Spectrum. Breakdown of electromagnetic radiation by increasing wavelength. 1. The Electromagnetic Spectrum. Wavelength/frequency/energy. MAP TAP 2003-2004. The Electromagnetic Spectrum. 2. Teacher Page. Content: Physical Science—The Electromagnetic Spectrum. Grade Level: High School. Agenda. Turn in Displacement Lab work. Turn in Permission slips. Notes on . Studying Space & . Exploring . Space packet. Studying space from Earth. Tele. = distance. Scopos. = to watch. Light and radiation (energy in the form of waves that travel through empty space). 6. th. grade . Mrs. Messina. DO NOW. : 2/23/16. T. hink about the term “. electromagnetic. ”. . List as many things . that you can think of that are considered electromagnetic.. Electromagnetic energy. . What do X­rays, light, microwaves, radio waves, and infrared have in common? . . EM Radiation. Radiation can be described as the movement of energy through space. . There are many different sources of radiation that vary by intensity. . :. None. Activities/Assignments:. Notebook . Organization. Acrostic Poem. Today in I.S.…. I.S. Learning Goal. :. I can analyze the factors used to explain the origin and evolution of the universe.. March 25. June 18. September 26. December 19. http://video.pbs.org/video/2219781967/. Electromagnetic Waves. Believe it or not, you are being . “. showered. ”. all the time, not by rain but by waves. . Presented By. Dr. . Banashree. . Saikia. Assistant Professor. Department of Geography. JN . College, . Boko. Electro Magnetic Radiation . is one of the important component Remote Sensing . Technique..